GeoLocation data type incompatibility between odata service and it's .Net generated client side proxy - serialization

Question

I am trying to do a proof of concept with the odata compliant cloud database feature of JayStorm. So far it's going great, but I have one big problem that fits in the category of odata service client proxy serialization category.
My odata service url is: https://open.jaystack.net/c72e6c4b-27ba-49bb-9321-e167ed03d00b/6494690e-1d5f-418d-adca-0ac515b7b742/api/mydatabase/
I create a simple .Net console app and add a service reference to this service. It all looks fine at first, however there is an incompatibility between the server side data type for GeoLocation (json payload is: {"type":"Point","coordinates":[-71.56236648559569,42.451074707889646],"crs":{"properties":{"name":"EPSG:4326"}) and the client side type the add reference wizard chooses. It seems they are very different data types and just client side select queries or client side insert/updates don't work. For example the below code throws an exception on line SaveChanges();
System.Data.Services.Client.DataServiceRequestException was unhandled
HResult=-2146233079
Message=An error occurred while processing this request.
Source=Microsoft.Data.Services.Client
StackTrace:
at System.Data.Services.Client.SaveResult.HandleResponse()
at System.Data.Services.Client.BaseSaveResult.EndRequest()
at System.Data.Services.Client.DataServiceContext.SaveChanges(SaveChangesOptions options)
at System.Data.Services.Client.DataServiceContext.SaveChanges()
at JumpSeatDataImporter.Program.Main(String[] args) in c:\Projects\JumpSeat\Dev\JumpSeatWeb\JumpSeatDataImporter\Program.cs:line 24
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException: System.Data.Services.Client.DataServiceClientException
HResult=-2146233079
Message=Format Exception: Invalid 'Point' format!
at Function.$data.GeographyBase.validateGeoJSON (/usr/lib/node_modules/jaydata/lib/TypeSystem/Types/Geography.js:75:29)
at GeographyPoint.GeographyBase (/usr/lib/node_modules/jaydata/lib/TypeSystem/Types/Geography.js:6:25)
at new GeographyPoint (/usr/lib/node_modules/jaydata/lib/TypeSystem/Types/Geography.js:94:29)
at $data.oDataConverter.fromDb.$data.GeographyPoint (/usr/lib/node_modules/jaydata/lib/Types/StorageProviders/oData/oDataConverter.js:55:64)
at Airport.$data.Entity.$data.Class.define.constructor (/usr/lib/node_modules/jaydata/lib/Types/Entity.js:189:41)
at Airport.Entity (eval at <anonymous> (/usr/lib/node_modules/jaydata/lib/TypeSystem/TypeSystem.js:463:20))
at new Airport (eval at <anonymous> (/usr/lib/node_modules/jaydata/lib/TypeSystem/TypeSystem.js:463:20))
at EntitySetProcessor.$data.Class.define.invoke (/usr/lib/node_modules/jaydata/lib/JayService/OData/EntitySetProcessor.js:61:38)
at JSObjectAdapter.$data.Class.define.processRequest (/usr/lib/node_modules/jaydata/lib/JayService/JSObjectAdapter.js:89:37)
at JSObjectAdapter.$data.Class.define.handleRequest (/usr/lib/node_modules/jaydata/lib/JayService/JSObjectAdapter.js:165:26)
StatusCode=500
InnerException:
Here is the code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Spatial;
using System.Text;
using System.Threading.Tasks;
namespace AirportDataImporter
{
class Program
{
static void Main(string[] args)
{
var db = new AirprotDB.mydatabaseService(new Uri("https://open.jaystack.net/c72e6c4b-27ba-49bb-9321-e167ed03d00b/6494690e-1d5f-418d-adca-0ac515b7b742/api/mydatabase/"));
//{"Name":"sfd","Abbrev":"sd","GeoLocation":{"type":"Point","coordinates":[-71.56236648559569,42.451074707889646],"crs":{"properties":{"name":"EPSG:4326"},"type":"name"}}}
var airport = new JumpSeatDB.Airport();
airport.Abbrev = "Foo";
airport.Name = "Bar";
airport.GeoLocation = GeographyPoint.Create(51.87796, -176.64603);
db.AddToAirport(airport);
db.SaveChanges();
//var foo = db.Airport.ToList();
}
}
}
What can I do to have the client side proxy use a fitting (custom declared?) class which will allow me to round trip data, including the GeoLocation property? Without this, I can't upload/update data from sql server and files to JayStorm...
You should be able to emulate my issue fully by adding a service to a console app and running the above provided code. Don't worry about messing up the data.
Thanks

Answer 1

The geo types are exposed only via JSON format right now (this might change in the mid-term) and .NET uses XML by default, which leaves three options:
make your .NET app to work in JSON format with Data Services Client 5.5.0 and Data Services Tools 5.3 (this generates a new proxy, which accepts the Format property on the context) - I wasn't able to achieve this in .NET, but I do hope you are better than me :)
you use a HTML5 page or node.js to import your POIs with JayData library
you post you csv file to a JayStorm service operation, which processes the file. You post to the service operation with HttpRequest